REST & SOAP API Load Testing

Confidence in the speed and scalability of your APIs

Speed is just as important as accuracy when it comes to APIs. A slow API can grind the user experience to a halt, but you don't have to wait for things to go live before understanding how they will behave under heavy load.

With LoadUI Pro, you can reuse your functional API tests built on the industry's #1 open-source based API testing tool, SoapUI Pro to speed testing and reduce the time it takes you to deploy high performance REST and SOAP web services.

Rapidly create API load tests

LoadUI Pro is hands down the easiest way to run a quick API load test, either against a single web service endpoint or based off of an existing functional API test created in SoapUI. With LoadUI Pro, you can:

Test the speed and scalability of new changes to your APIs in minutes, not days

Preview API performance behaviors before releasing to production environments

Shift performance insights more to the left so developers build more reliable code

Gain insight from real-time API load tests

The whole point of load testing is to make sure that your API will handle demand adequately, whether that's a quantity you already know and want to ensure, or you just want to see how much traffic a specific setup can handle. With LoadUI Pro, you can:

Throw multiple varying loads of traffic at your API simultaneously

Record traffic from mobile devices and replay at large volume

Visualize the effects of a load test on your server and network resources

Actionable insights into your API's performance only comes from rolling your sleeves up and getting down to the nitty gritty. Fortunately, you don't have to get your hands dirty to obtain meaningful results in LoadUI Pro.

Simulate traffic from the cloud or on-premise

LoadUI Pro gives you the ultimate control over where and how you simulate traffic against your APIs. Using our enterprise-ready load agents at no additional cost, you can:

Visualize the impact of load on your servers

In LoadUI Pro, you have advanced visualization capabilities over the information resulting from your API load tests. You can visualize, split, and combine server-side metrics like:

Operating Systems: Linux and Windows performance collections

Web Services: IIS, Apache, Tomcat, WebLogic

Databases: MS-SQL and MySQL performance

Perform comprehensive API load testing

Load testing is useful on its own, but is even more fantastic when combined with SoapUI Pro and ServiceV Pro. SmartBear delivers these applications in the ReadyAPI suite to make the process of comprehensive API load testing as seamless as possible:

Save time by re-using API functional tests as load testing workload

Use dynamic data in your API load tests for more realistic simulations

Virtualize external APIs that don't allow or handle load tests very well